Hose coupling



Patented Dec. 2, 1941 UNITED STATES PATENT oFElcE HOSE COUPLING Alecander Thomson, Akron, Ohio Application November 5, 1940, Serial No. 364,407

(ci. ecs-so) 2 Claims.

This invention relates to improvements in a hose coupling whereby a satisfactory seal is obtained between the members coupled together without the use of conventional clamps or other securing means.

An object of the invention is to provide novel means for quickly and efficiently coupling a fiexible hose to metallic pipe or other rigid structure, or to another piece of hose.

Another object is to provide a coupling which will be strong, neat in appearance, and simple of construction.

A further object is to provide a novel method of coupling hose to another member.

Other objects and advantages will become apparent from the following description taken in conjunction with the accompanying drawing.

lIn the drawing:

Fig. l is a broken sectional viewthrough a piece of metallic pipe or other memberto which the hose is to be coupled.

Fig. 2 is a similar view showing the hose joined to the pipe on other member.

Fig. 3 is a similar view showing a modified embodiment of the invention, and

Fig. 4 is a vertical section taken substantially on line 4-4 of Fig. 2.

Referring to' the embodiment shown in Figs. l, 2 and 4, the numeral I0 indicates a member to which a piece of hose is to be coupled. In this instance member I comprises a piece of metallic pipe having a longitudinal opening II therethrough, but this member could be another piece of hose.

Adjacent one 'e'ndl member I0 is provided on its outer surface with a groove I2 which tapers as shown at I3 and decreases in depth in a direction away from the end of the member. Groove I2 is adapted to receive a. flexible ring I4 formed `of rubber or other suitable flexible material,

which ring is of sufficient thickness to extend beyond the outer surface of member III. In this instance about half the thickness of ring Ilextends beyond member I0, but this may be varied according to the material used and the exibility of the hose. sarily, a collar I5'is formed on member I0 so as to provide a shoulder I6 which will engage the end of the hose to be joined to member I0 and limit the movement of the hose as shown in Figs. 2 and 3.

Referring to Fig. 2. hose I`| has been forced over the end of member I0. even though the latter has an outside diameter at least equal to the inside diameter ofthe hose. and as the hose is Preferably. but not necespushed toward shoulder I6, the hose frictionally engages ring I4 and causes the latter to move up the tapered portion of groove l2 and onto the outer surface of member I0. As soon as ring I4 gets on the outer surface of member I0 it forms a seal between the hose and member I0, which seal will prevent leakage unlessvery high pressure fluid is being passed through the joint. Preferably, but not necessarily the hose is forced on member IIJ until it engages shoulder I6 so that a substantial amount of the hose will be overlapping member II).

Thus a coupling is provided which is strong, neat and simple, and is entirely satisfactory for many uses, among which may be noted, use in the cooling system of internal combustion engines and in garden hosen It should be noted that no exterior clamping means of any kind is used to hold the hose and member I0 together, the frictional engagement between the ring I4 and the two members joined together being sufficient for all ordinary purposes. In fact, it has been found that the outer surface of member I0 may even be irregular, such as would be found on a casting, and the seal is not affected by such irregularity.

In the modified embodiment shown in Fig. 3, an even stronger coupling is provided by forming a small groove I8 in the outer surface of member I0. This groove is not as deep as groove I2 and allows ring I4 to anchor itself in the groove in the manner shown in Fig. 3.

In disconnecting the coupled members it is only necessary to pull hard enough to remove the hose from member I0, and in so doing, ring I4 will return to groove I2, making it easier to remove the hose after the ring has returned to groove I2.

While I have illustrated and described the preferred embodiments ofv my invention, it will be apparent that changes and modifications may b e resortedto without departing from the spirit of the invention or from the scope of the subjoined claims. i

What is claimed is:

1. The combination of a tubular member and a flexible hose adapted to be connected` thereto. said tubular member having a groove Iin its outer surface adjacent one end thereof, and a distortable ring adapted to be placed in said groove, said ring being movable by rolling action out of said groove onto the outer surface of said tubular member by frictional engagement with the inner surface of said hose when the latter is forced over said tubular member.

v2/'The combination of a tubular member tand a'exible hose adapted to be connected thereto, said tubular member having a tapered groove in its outer surface adjacent one end thereof, and

a ring of rubber-like material adapted to be .i placed in said groove, said ring being movable ALEC'ANDER THOMSON 

